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Recognised as Colour

#491B2A

  • #491B2A
  • Red
  • Dark
  • Nearest: Black

#491B2A is a red with RGB values 73, 27, 42 and HSL 340°, 46%, 20%. It is a dark colour, so white text on it reaches 14.3:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#491B2A#491B2A
HEX#491B2A
RGBrgb(73, 27, 42)
RGB (0–1)0.2863, 0.1059, 0.1647
RGB percentages28.6%, 10.6%, 16.5%
HSLhsl(340.4, 46%, 19.6%)
HSV / HSBhsv(340.4, 63%, 28.6%)
CMYK0%, 63%, 42.5%, 71.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,791,082
CSS custom property--colour: #491B2A;

Brightness & contrast

Relative luminance0.02368WCAG 2.x, 0 is black and 1 is white
Perceived brightness47.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.25:1
Contrast with white14.25:1WCAG normal text: AAA
Contrast with black1.47:1WCAG normal text: Fail
Greyscale equivalent#262626
Inverted#B6E4D5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#23252Ano red cones; affects about 1% of men; ΔE 23.8 from the original
Deuteranopia#2F2E29no green cones; the most common form, about 1% of men; ΔE 24.5 from the original
Tritanopia#4F1721no blue cones; rare, and affects men and women equally; ΔE 7.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text14.25:1WCAG large text: AAA
Contrast with black, large text1.47:1WCAG large text: Fail

Named colours

Black · ΔE 29.3Dim grey · ΔE 36Dark slate grey · ΔE 38.3Gray · ΔE 43.3Sienna · ΔE 44.1Brown · ΔE 44.3
Nearest named CSS colourBlack (#000000)ΔE 29.34, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#1B493A
Analogous#491B41, #49231B
Triadic#2A491B, #1B2A49
Split complementary#1B4923, #1B4149
Tetradic#41491B, #1B493A, #231B49

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C76988
Lighter +30%#B9446A
Lighter +20%#933755
Lighter +10%#6E293F
Darker −10%#240D15
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#560F26
Less saturated −25%#3D282E

Channel breakdown

R73
G27
B42
Red73 (28.6%)
Green27 (10.6%)
Blue42 (16.5%)
Hue340.43°
Saturation (HSL)46%
Lightness19.61%
Dominant channelRed
Hex per channelR 49 · G 1B · B 2A

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Every value on this page was computed from “491b2a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.